wow man.. sorry to hear about that accident, glad pulled through it OK though.. as for the airbags, i flipped a civic almost exactly a year ago in a similar way (photo in my gallery if you want to see it), a bus clipped my rear bumper on I-95 and when i got sideways i rolled a couple times then skidded on the roof/hood a while til i hit a pole. no airbag deployment there either.. theory my friends and i came up with is that by time the bumper really hit anything, the car had been so tossed around that a whole slew of wires and such were torn/disconnected.... then again maybe there wasnt a significant enough impact in the front or rear bumpers, i cant really tell from the picture, but it doesnt look like your hood or front bumper were really smashed

glad you are OK though